<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            margin: 0;
        }
        
        .container {
            height: 400px;
            background-color: pink;
        }
        
        .item {
            width: 25%;
            height: 100%;
            display: inline-block;
        }
        
        .item1 {
            background-color: yellowgreen;
        }
        
        .item2 {
            background-color: orangered;
        }
        
        .item3 {
            background-color: aquamarine;
        }
        
        .item4 {
            background-color: chocolate;
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="item item1"></div><div class="item item2"></div><div class="item item3"></div><div class="item item4"></div>
    </div>
</body>

</html>